I can’t check if `.childNodes[1].childNodes[1]` exists or not

Question

Array.from(document.querySelectorAll('.thread')).map((item) => {
    
    if(item.childNodes[1].childNodes[1] === undefined){
        console.log('hey')
    }
})

My point is, if there is no item.childNodes[1].childNodes[1] then do something. That’s it.

Answer 1

You can make use of optional chaining :-

if(item?.childNodes?.[1]?.childNodes?.[1] === undefined){
        console.log('hey')
    }